Nurling-machine.



P ATENTED AUG. 23, 1904.

L. A. GASGRAIN. NURLING MACHINE.

ABPLIOATION FILED DEG. 3L-1902.

2 SHEETS-SHEET '1.

no MODEL.

w oesaas:

' M67040)". Iauzls 0. C415 @ilom race/ rd Zia x iwr l 26%} JM PATENTED AUG. 23,1904.

' L. A. GASGRAIN.

NURLING MACHINE.

A-PPLIOATION FILED DBO. 31. 1902.

NO MODEL.

2 SHEETS-SHEET 2.

Patented August 23, 1904.

LOUIS A.

UNITED SHOE SPECIFIGATIO oASeRAIN. or WINCHESTER,

MACHINERY COMPAN AND BOSTON, MASSACHUSETTS,

N forming p Application filed December 31, 1902. $eria1i7l'o. 137,285.

- To all whom, it may concern.-

zen of the United State duction of a novel m leather or other machine contains as r that may,

the sole may have during the operation of securi the upper.

may be used to adv for any purpose.

The tool herein shown is of circular form ll or travel over the leather or Stock to be treated, and while in contact 1 has imparted to it rapid preferably, by

and is adapted to ro with the stock the too percussio a Series 0 3 by a revolubl r-ier. The impulses stock are of high results the tool wi the stock being treat 3 5 over the stock the ram result in subjecting the tions in pressure in the tool with the stock, compress and consol 4 by the tool.

A patent o granted to me describes a ,ma

sole, driving fastenings in the openings, and the openings to co y studies, aiming to improve the f the sole which had been opere machine described in said patthen closing tenings. M appearance 0 ated on by th the drawi nal impulses, effected f blows delivered in rapid succession e hammer acting on a tool-cartransmitted to the For the best ll remain in contact with d, and as the tool travels d percussional impulses stock to rapid varialine of contact of the such idate the stock acted upon frequency.

nown that LLoUIS A..GASeRArN,a citis, residing at Winchesty of Middlesex an have invented an Improve- -Machines, of which the fol in connection with the ings, is a ngs has for its object the pro-- achine for operating on compressible s one 0 been s The machine and tool herein to be described antage in the treatment of articles of leather or for nurling thus variati r the United States, No. 698,686, February 18, 1902, shows and chine for cutting openings in a f its members a tool among other uses, portions of the sole of a boot or shoe where omewhat defaced ng the sole to nceal the fas- NURLlNG-IVIACHINE.

art of Letters Patent No. 768,560, dated August 23, 1904.

(110 model.)

ent, resulted in the production of the machine and tool forming the subject of this invention, and by its. use I have demonstrated that the openings referred to as having been made in the sole may be so firmly closed that the lines of out are substantially obliterated. The tool used herein is represented as a roller or annulus having a series of peripheral teeth or projectionsthat serve to nurl the stock. This invention is not, however, limited to this character of tool nor to the particular shape shown for the periphery of the tool, and the teeth or projections may of course be varied'in size and shape according to the design of nurling desired for the stock. The rolling-tool will preferably be rotated solely by the. moving stock and will preferably be so sustained as to be self-adapting to stock whether plane or d State of 5 5 Specification,

representing took. The

made to nurl series of rapid percussional impulses efiected blows.

by a succession of rapid de elevatlon represents a nurlleather used 7 Figure 1 in si -ing-rnachine embodying my invention in one of the best forms now known to me. Fig. 2 is a detail of the mechanism for sustaining and operating the stock-support. Fig. 2 is an enlarged detail showing in section part of the tool-carrier and the tool acting on the surface of stock, the tool being in upright position. Fig. 2 is a similar view showing the tool in an inclined position. Fig. 3 is a side elevation of the upper part of the machine shown in Fig. 1 on a larger scale, showing the face-plate, the hammer, the die, and its carrier in section. Fig. 1 is a detail of the spindle-holder and the rear side, of the revolving hammer. Fig. 4 is a detail showing the clamping-block detached and the stud therein: Fig. 5. is a view of the upper portion of the front. part of the machine. Fig. 6 is a section on the line 12, Fig. 3, the stock- ;support being omitted. Fig. 7 is a periphons acting to I upper end of a shaft B rapid blows.

eral view of one form of tool. Fig. 8 shows I a piece of stock portions of which have been operated upon by the nurling-surfacc and portions of which are in the condition in which it-was left by the machine shown in said Letters Patent. Figs. 9 and 10 are enlarged sectional details of the lower end of a modified form of tool-carrier and tool, the latter being shown in different positions to illustrate the adaptability of the tool to the plane of the surface of thestoek. Fig. 11 is a sectional detail in the line-a2, Fig. 9.

The frame consists of a column A, having feet A to rest upon the floor. The upper end of the column sustains an arm A shaped to receive a shaft A provided with fast and loose pulleys A A, that may be rotated by a belt A from any suitable source of power. The machine is started and stopped in usual manner by a belt-shipper M.

The shaft A is threaded at B and is provided with a worm engages a worm-toothed (see Fig. 3) B. The worm gear B fast on the extended through a bore in an upward extension B of a block B, interposed between the front, or the righthand end viewing Fig. 3, of the arm A and the face-plate B connected with the frame by bolts 0. The lower end of the block B* has a depending hollow boss C, that serves as a bearing for the shaft B the threaded lower end of which is extended therethrough and receives upon it a toothed gear The boss 0 is embraced by the split hub of aclampingblock C (shown detached in Fig. f.) This block is held in adjusted position on the boss by a clamp-screw C and is bored to receivea headed stud-screw D, threaded at its lower end to receive upon it a toothed gear D and a feed wheel D having, preferably, a frictional surface D The rotation of the feedwheel is effected by the shaft A through the shaft B and the gears described. The inner side of the face-plate B has a guideway in which is entered loosely a tool-carrier E one side of which contacts with the face of the block B.

The shaft A carries a hammer presenting an irregular acting face adapted in the rotation of said shaft to impart to the tool-carrier a succession of rapid blows. For the best results the friction between the rapidly-rotating hammer and the tool-carrier should be reduced to the minimum, and to provide for this in one of the best forms now known to me I have represented the hammer as comprising a block D, having a series of rollers D sustained on spindles E; but this invention is not limited to the use of the particular form of iammer shown, as my invention is broad enough to cover any form of hammer that will impart to the tool-carrier a succession of To reduce the friction between the spindles Eand the rollers D surrounding them, each spindle has been provided with a hole for the reception of a wick the free end of which enters an oil-chamber u in the block D. This block has a hole (1 through which oil may be supplied to the chamber (1 The spout of the oil-can used to supply-oil to chamber a may be passed into a hole 1/ in the face-plate 13". The spindles 1C a re secured in position by a locking device 1*), (shown best in Fig. 4 as a plate,) having a series of projections 2, each of which enters a notch atthe side of one of the spindles near its inner end. By turning the locking device the projections 2 may be disengaged from the notches of the spindles, and the spindles may be witlulrawn.

The lower end of the tool-carrier is provided with a tool-sustainer 7;, the upper side of which is convexed or crowning, (see Figs. 2 and 2",) the under side being eoncaved, the line of the are representing the concavity being struck from a center 5 (see Figs. 2" and 2 below the tool-sustainer and the periphery of the tool. The tool b is shown as a roller made as a ring convexed internally, viewing the same in cross-section. The periphery of the tool that contacts with the stock is represented (see Fig. 7) as having a series of teeth or projections, (shown as substantially parallel and of different lengths.) The tool shown will outline on the stock a waved line of nurling. The line of nurling not on], Y oblitcrates defacing-marks on the stock made in the operation of inserting fastenings, but also produces a line of ornamentation, and the stock in the line acted upon by the tool is com pressed and consolidated. The particular configuration or design for the surface of the nurling-tool is of course not an essential part of this invention, and it will be understood that the acting face of the tool may be made to correspond with the work to be done or the design it is desired to present on the stock. The tool I) surrounds loosely the tool-sustaiuer Z) and is free to travel thereabout when caused so to do by the movement of the stock in contact with the tool. Vhen the tool in use is in contact with the stock, (see Fig. 2,) the convexed inner side of the tool is made to take a bearing against the concaved under side 10 of the toolsustainer Z), and preferably at this time the i n terior of the tool is substantially out of contact with the convexed upper side of said sustainer. Fig. 2 shows the tool in contact with stock having its surface parallel with the longitudinal axis of the tool-sustainer, and Fig. 2" shows the top of the stock as occupying a position at an angle to said longitudinal axis. In each figure it will be seen that the tool is freeto change its position in the direction of the length of said tool-sustainer, and yet the periphery of the tool bears in like manner on the surface of the stock. The upper portion of the tool shown in Figs. 2 and 2", or that portion above the sustaincr 7), is moved by change of position of the surface of the stock,

and in this way the pressure of theperiphery the tool-carrier and the pin F.

of the tool is uniform and just the same whatever the position of the surface of the stock with relation to the longitudinal axis of the sustainer 6. Supporting the tool in such manner that it may readily adjust itself to variations in the surface of the stock and the provision of rot'atingthe tool by the stock and not positively by mechanism are important features of this invention. To insure the greatest perfection in the nurling, the tool should bear constantly on the stock while the machine is in operation. This contact may be insured by a spring F, interposed between The spring from leaving the stock beprevents the tool tween the successive blows of high frequency transmitted by the hammer through thetool carrier.

The pin F, extended through'ahole 4c in the tool-carrier and entering a'hole in I ing-screw 8.

tically-movable sleeve H is free to slide.)

vated position,

block 113*, serves to limitthe descent of the tool-carrier under the action of spring F when the stock is removed from contact with the tool. The removal of' the pin enables the.

tool-carrier to be taken outof the machine.

The stock, herein illustrated as part of a shoe, will be sustained on an arm Gr, forming part of a stock-support, said arm having, preferably, a button 6.. The lowerend of said arm has a split hub that receives clampingscrewsv 7, by which to clamp said hub to an elongated sleeve G, that sur'roundsloosely the upper end of a rod. G free to slide vertically in a bearing G sustained by the column. Below the bearing G4 rod G is sure rounded by a' strong spring H, whoseupper end contacts with the interior of a hollow weight G clamped on said rod by a clamp- The lower end of the spring H rests on an adjustable support H, (shown as a nut applied to the threaded part 9 of a ver. that constitutes a bearing in which the lower end of the rod G The extremity of said rod has a stop 10 to limit the upward movement of the rod G by the spring H. The lower end of the sleeve has pins 12, over which fit links 13, and the opposite ends of said links embrace apin 14:, carried by theupper end of a lever or treadle H, pivoted at H on an ear H extended from theframe. .The lever has a stop 15, which limits the downward movement of the rod G and determines the position of the lever and stock-support when the machine is'not in operation. When the machine is in operation, the operator'keeps his foot upon the outer end of the treadle H holding the rod G ,-through the spring H, yieldingly in eleforcing the. stock on the stock-. support against the tool I) and. holding the upper .end of tool-carrier E in the path of movement of the hammer. The weight G .gives to the stock-support the character of an anvil and prevents undue yielding of the support under the stroke of the hammer.

The

the stock-support rising between the rapid consecutive strokes of the hammer on the tool-.

the more rapid will be the percussional impulses of the hurling-roller on the stock, and the morerapid the strokes of the hammer the .lighter should be the weight, and vice versa.

In operation let it be supposed that the shaft A and the hammer are being rotated at a very rapid speed, preferably a speed at which the hammer will strike the upper end of the tool-carrier from six to seven thousand blows a minute. The operator having applied the stock to the stock-support, as shown in Fig. 1, elevates the stock-support, presses the stock against the tool 5', raises the tool-- carrier and places its upper end in the path of movement of thehammers that they may strike the tool-carrier a series of blows in rapid succession, enabling the tool I), in contact with the stock, to respond to the hammer-blows and impart to the stock blows of high frequency or percussional impulses of great frequency. These blows cause the tool to knurl the stock and obliterate the marks made in inserting fastenings. While this is being done the work is held by the operator against the feed-wheel D which serves also the. purpose of an edge-gage to determine the distance of the nurling'from the edge of the stock. 1

The machine herein described is preferably made to act on the stock, if a shoe, in substantially the last operation of finishing the shoe after the sole has been leveled and buffed and preferably after the application to the. buffed sole of usual dressing. 1 have found in practice that the extremely rapid succese sion of blows and the variations in the pressure of the tool on the stock over which'it rolls cause the tool to clean itself from any foreign mattertaken from the stock and ad: hering to the' tool, and consequently the toothed periphery of said tool free from any adhering particles-of stock may be run from the blackened shank of a sole onto the lightercolored fore part without soiling the latter. It is unnecessary. toheat the roller, as usually required in this class of work. i By the term tool I intend to include any device which may be used, as recited, for the purpose of nurling, embossing, compacting, or finishing portions of the stock. Referring to the modification Figs. 9, 10,- and 11, the-tool b' surrounds loosely the toolsustainer 6 shown as astud held in a throat cut in thelower end of the tool-carrier E. The toolsustainer has an annular projection 41 extended therefrom that sustains the tool in its rotation with the stock and permitsv thetool to move longitudinally of the to.ol-sus quency while the tool tainer when the surface of the stock acted upon by the tool varies so as to stand in a plane not parallel with the longitudinal axis of said sustainer.

The revolving hammer constitutes a constantly-moving means to cause the tool when in contact with the stock to impart to the latter percussional impulses of high frequency. When the stock is removed from contact with the tool, the hammers cease to strike the toolcarrier, and the tool becomes inoperative. By the term percussional impulses I mean a rythmical action of high frequency produced mechanically and setting up in the device acted upon a pulsatory or extremely rapid movement, and the best way now known to me for imparting this movement is by a series of rapid blows imparted bya revolving hammer; but this invention is obviously not to be limited to the mechanical embodiment herein shown and described.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a machine of the class described, a leather-working tool, and means for imparting to said tool while in contact with the stock a succession of rapid blows.

2. In a machine of the class described, a leather-working tool continuously in engagement with the stock, and means for imparting to the stock through said tool a succession of percussional impulses of high frequency in a direction approximately perpendicular to the plane of the face of the stock.

3. In a machine of the class described, a leather-working tool, and means for imparting to said tool a succession of rapid blows when said tool is in contact with the stock, said means being arranged and constructed to cease actuating the tool when the tool is out of contact with the stock.

4. In a machine of the class described, a leather-working tool, means for imparting to said tool a succession of rapid blows, and means for rendering said tool inoperative when the stock is withdrawn from position to be operated upon.

5. In a machine of the class described, a rotary tool adapted to bear on the face of stock, a carrier therefor, and means to impart to said carrier percussional impulses of high freis rotated by the stock.

In a machine of the class described, a tool normally in contact with the stock, and means to vary at rapidly-succeeding intervals while the tool is in contact with the stock the degree of pressure of said tool on the stock.

7. In a machine of the class described, a tool-carrier, a tool rotatable only by the stock with which it contacts, and means to impart to said tool while in contact with the stock a series of blows in rapid succession.

8. In a machine of the class described, a

stock-support, a rotary tool to engage and travel over the face of the stock, and means to effect rapid relative movement of the stocksupport and tool toward and from each other to subject the stock to a succession of rapid blows.

9. In a machine of the class described, a rotatable tool to bear on the face of stock, and means for sustaining said tool so that it may maintain continuous contact with the moving stock whatever the plane occupied by the face of the stock.

10. In a machine of the class described, an annular tool interiorly convexed in cross-section, and a tool-sustainer concaved at its under side to constitute a seat for said tool when the tool is in contact with the stock. v 11. In a machine of the class described, a tool-sustainer shaped at its under side to present a concaved arc, and a surroumling ringlike tool interiorly convex in cross-section, the are at the under side of the tool-sustainer being struck from a center below the periphery of the tool when in working position on the sustainer.

12. In a machine of the class described, a tool-carrier and tool, means for sustaining said carrier and tool normally in inoperative position, said parts being arranged to be put into operative position by the stock, and a continually-moving device to coact with said toolcarrier and cause the stock to receive a series of percussional impulses of high frequency when said carrier is placed by the stock in the path of said continually-moving device.

13. In a machine of the class described, a tool, and a tool-carrier having a tool sustainer encircled by said tool, the tool being free to rotate about the sustainer and to be moved longitudinally with relation to said sustainer as the tool is moved by the stock.

14. In a machine of the class described, a tool adapted to bear on the stock, a tool-carrier, hammer mechanism to strike said toolcarrier a series of blows in rapid succession when the tool is in contact with the stock, and means for feeding the stock.

15. In a machine of the class described, a stock-support, a rotary tool adapted to engage the stock, means for imparting to said tool a succession of rapid blows, and a weight to enable the stock-support to move more sluggishly than the tool.

16. In a machine of the class described, a rotatable hammer, means to rotate said hammer, a carrier movable relatively to said hammer provided with a leather-working tool, means to arrest said carrier in inoperative position with relation to said hammer, said carrier being put into operative position by the pressure of the stock against said tool.

17. In a nurling-machine, a carrier having a toolsustainer, a tool loosely mounted on and rotatable freely about said sustainer by the action of the stock against said tool, and means to impart to said carrier and tool rapid movement in a direction approximately perpen- 18. A stock-support, a leather-workingtool, means to cause the stock to be clamped yieldingly between said stock-support and tool, means to change rapidly the relative positions of said tool and stock-support to cause the tool to deliver a series of blows at rapid intervals to the stock, and a Weight to enable the stock-support to move more sluggishly than the said tool.

19. In a machine of the class described, a

leather-working tool, actuating mechanism for causing said tool to engage and act upon the stock, and means acting automatically for causing the movements of the leather-working tool to be discontinued when the stock is not in position to be operated upon.

20. In a machine of the class described, a leather-working tool, actuating mechanism for causing said tool to engage and act upon the stock, and automatic means for causing the operation of the tool to be discontinued, without interrupting the operation of the actuating mechanism, when the stock is not in position to be operated upon.

21. In a machine of the class operating-tool normally in continuous engagement with" the Work, actuating mechanism therefor, and means acting automatically, when the stock is disengaged from the operating-tool, to cause the movements of the tool" to be discontinued without interrupting the operation of the actuating mechanism.

22. Ina machine of the class described, an

, actuator, and a tool arranged to be-moved described, an

into operative relation to the actuator when the Work is presented thereto, said tool being movable out 'of operative relation to its actuator-when the work is withdrawn.

23. In a machine of the class described, a tool-carrier and tool, means for sustaining said carrier and tool, said parts being arranged to go automatically into inoperative position upon removal of the stock from the tool, and a continually-moving device to-co act with said tool-carrier and cause the stock to receive a series of percussional impulses of highfrequency whenever the tool-carrier is in operative position. v

24. In a machine of the class describ d, a tool, and a tool-carrierhaving a tool-sustainer encircled bysaid tool, the tool being free -to rotate about the sustainer and to move byva tilting longitudinal movement with relation to said sustainer as the tool is moved by the stock.

25. In a machine of the classdescribed, a 7

tool, a tool-carrier and hammering device, and means for sustaining said tool and carrier so that the tool-carrier tends to move automatically out of the range of the hammering device, and said carrier is moved into the range thereof by the stock presented to the too In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

Louis A. 'cAsenAiN.

Witnesses:

JOHN G. EDWARDS, MARGARET A. DUNN. 

